Liquefier system for solidified carbon dioxide



March 9, 1937. c, K 2,073,121

LIQUEFIER SYSTEM FOR SOLIDIFIED CARBON DIOXIDE Filed Aug. 15, 1934 INVENTOR; F1 3/? C. 6290?.

/ ATTORNEYiS.

Patented Mar. 9, I 937 UNITED STATES PATENT OFFICE.

LIQUEFIER SYSTEM FOR- SOLIDIFIED CARBON DIOXIDE This invention relates to liquefier systems for solidified carbon dioxide wherein is embodied such structural features as are shown and described in my co-pending application for United States Letters Patent Serial Number 719,740,1i1ed April 9, 1934, and in my United States Letters Patent No. 1,928,396, issued September 26, 1933.

One of the important objects'of this invention is to provide a liquefier system that is cheap to manufacture, is strong and durable, will permit of adjustment bothduring the initial-assembly and while servicing and presents an exceptionally compact liquefier system having novelly related tanks forming the main reservoir and reserve-containers.

It has been found in practice that the proper combination between the component tanksof a liquefier system is difiicult to establish and maintain where one tank is supported by the other. This invention, therefore, provides structure that is commercially practical in this regard and one exempliiication of the invention is illustrated in the accompanying drawing, wherein: I

Figure 1 is a side elevation of a liquefler system made in accordance with this invention. v

Fig. 2 is an edge elevation of the same.

Fig. 3 is a top plan view, and, v

Fig. 4 is a horizontal cross section taken along line IVIV of Fig. 2.

In constructing the main reservoir, the same should be made to embody theieatures described in my aforementioned co-pending application, wherein is disclosed the proper means for inserting solidified carbon dioxide into main reservoir 6. This reservoir is preferably cylindrical and should rest upon a number of supporting legs 8,

whereby the bottom of the reservoir 6 is elevated from the floor or other supporting surface. The top of reservoir 6 is providedwith a closure [0 which is locked in place by a cross bar l2 so that reservoir 6 is gas tight, with the exception of the hereinafter mentioned connections which draw off the carbon dioxide gas after it has been formed by thesublimation of the solid within reservoir 6. H

It is oftentimes desirable to have 'a reserve 'supply of carbon dioxidetgas available so that in the event main reservoir 6 is entirely emptied, there will be enough gas to carry on commercialv operations until a new supply of gas can be built a up in main reservoir 6. Accordingly, a reserve tank I4 is provided in this system, which is preferably supported by main reservoir 6 in unique manner and in juxtaposition thereto as shown in the drawing. Special connections between main reservoir 6 and reserve tank [4 allow filling l of thistank and then closing it ofi from the system, while carbon dioxideis being drawn directly frdm reservoir 6.

In the example illustrated, pipe I6 is in connection with the upper part oireservolr 6 and ex- 2 tends laterally therefrom to join vertical pipe l8 through the medium of valve 20. This valve 26 may have a blow-out plug 22 to relieve dangerously excessive pressures that might be built up within the system. A' second'valve 24 is located in pipe l8 and may be used to close off tank 14 from the remaining partof the system. The pipe 26 extends from pipe I8 between valves 20 and 24 and is joined to any suitable work not here shown. A separate valve 28 within pipe 26 'afiords an independent means of opening and closing pipe 26. Obviously, when it is desired to pass gas into tank l4, valves 20 and 24 are opened and valve 28 closed. When tank l4 has been filled, Valve 24 will be closed, thereby to retain a reserve supply in tank It and valves 20.and 28 opened so that the gas will flow directly from the main reservoir 6 through pipes l6 and 26 to the work.

When constructing such a liquefier system,

' tank it should be appreciably smaller than main reservoir 6 and. pipes and valves just mentioned should be located as shown in Figs. 1, 2 and 3. In so positioning these connections they will assist in holding reserve tan'k l4 against reservoir 6 and the connection to tank 314 is preferably through the top.

It has been found in constructing this simple.

plates is found in the means for adjustably supporting tank M. This means is in the form of a bracketv 30 which is secured to the bottom of reservoir 6 and extends laterally therefrom to a point beneath, tank l4. This bracket 30 has an opening 32- formed therethrough to receive a screw-threaded stem 34 integral with and depending from the bottom oftank l4. There is a nut 36 both above and below bracket 30 respectively in screw-threaded engagement with stem 34 which permits longitudinal adjustment of tank' l4 relative toreservoir 6. After or during the placement of the connections ,at the top of the two tanks, nuts 36 are tightened so' as to hold tank M *in a predetermined Set position. Legs 8 are high enough to permit stem 34, to project downwardly as shown, and'the system,. including the two tanks 6 and I4 wilLbe, thereby, rigidly assembled without special equipment or tools. The entiresystem is in the form of a unit that may be moved about with ease and in case of adjustment that might become necessary with regard to any pipe or valve, the same can be made without endangeringthe relation between the remaining parts of the-liquefler system.

I It is understood that the specific embodiment ofthe points or thisinvention mi ht be diflerent from that exemplified and'illustrated in the accompanying drawing.

5 Having thus described theinvention; what is claimed as new and desired to be secured by Letters Patent is: r

1. A liquefier comprising a .main reservoir; 8. reserve tank supported by the main reservoir in s'ide-by-side relation; pipes joiningthe upper ends of said reservoir and tank; and means for maintaining the reserve? tank at a predetermined adjusted position longit dinally oi the main reservoir.

2. A liquefier comprising a main reservoir; a

reserve tank in juxtaposition with said main reservoir and appreciably shorter-than the, same; a pipe interconnecting the upper portion said reservoir and upper portion of the tank having a 2 pair of manually operable valves" interposed therein; and atake-ofl tube in connection with the pipebetween said valves, all parts of said liquefier being supported by the main reservoir to create a liquefier'system movable as a unit.'

3. A liquefier comprising a main reservoir adapted tocontainsolidified carboir dioxide and the carbon. dioxideigas resulting ir'om its sublimation; a reserve tank appreciably smaller than the main reservoir in juxta ition with and" sup- BO ported by the latter, a pipe interconnecting said reservoir and tank having a valve therein to control the flow of said gas therethrough; and means for maintaining the said reserve "tank at a predetermined adjusted position longitudinally 0'1 the said main servoir.

4. A 'liquefi .coniprising a main reservoih adapted to'contain' solidified carbon dioxide and the 08.1'b011 dioxide gas-resulting .Irom its subli mation; a reserve tank appreciably smaller than 40 the main reservoir 'and supported by the latter;

pipes interconnecting said having control valves there their longitudinal axes. in parallel relation; and

7 means for adjustably supporting the reserve tank 4 in predetermined adjusted positicns-along its axial line. J H

5'.- A liquefier comprising a 'main' reservoir adapted to contain solidified carbon dioxide and I the carbon dioxide gas resulting from itssubli- 50.mation; a reserve tank appreciably smaller than the main reservoir and supported by'ithe latter;

; pipes, interconnecting said reservoir arid tank havingj c'ontrol valves therein, said tanks having their longitudinal axes in parallel relation; and

- means for adjustably supporting the reserve tank in predeterminedadjusted positions along its ax ial line, said pipes serving to preclude movement;

01' the top oithe auxiliary tank ironi s'aidmain reservoir. I 60 6. A liquefier comprising a main. reservoir adapted' to contain solidified carbo'n'dioxideand. the carbon dioxide gas resulting virom itssublimation; ajreserve tank appreciably smaller than the main reservoir and supported by the latter;

85 pipes interconnecting the upper portions of saidtanks to permit the flow 01' gas from one to the other; 'and adjustable means for establishing a supporting relation between the tanks comprising a threadedsteni depending from the lower, end 70 of thereservetank, a laterallyprojecting bracket rigid with thelower end oi the main reservoir and a i Mi f reservoir and. tank.

, said tanks having "pei' end thereof and intermediate the said upper end and the upper end of the reserve tank and joining the reserve tankpn thelongitudinal axis 15 thereof at its top; and means adiustably supporting the, said reserve tank at the bottom thereof permitting longitudinal adjustment of the reserve tank as the-said pipes and control valves require adjustment 8. A liquefier of the character described comprising a main reservoir; a reserve tank against the side of the main reservoir; pipes and valves joining the top oi said reserve tank and the side of said main'reservoir whereby to allow the pas- 25 sage of gas, from reservoir to tank; and adjustable means ,interco'nnecting' the main reservoir and tank to support the reserve tank in predetermined-positions alongthe side of the main- "reservoir as the manipulation of the pipes and '3 vjoining the top 01' said reserve tank and the side, 35 of said main reservoir whereby. to allow the passage of gas irom reservoir to tank; and adjust-' able means "interconnecting the main reservoir and tank to support the reserve tank in predetermined positionsralong thes ide of the main reser: 0 volt as the manipulation oi the pipes and valves increases or decreasestheir. length, said adjustable means and the said pipes andvalves, preciuding'movementoi the said reserve tank from the main reservoir. -10. A liquefier or the character described comprising a inain reservoir; a reserve tank in juxtapositionto the main reservoir: legs to support the bO'ttOlllgOf t e main reservoir spaced from tlfe floor; a peri atedbracket extending laterally from the bottom of the main reservoir be}. neath the reserve tank; a scrwtfireaded stem rigid to the bottom of the reserve tank and ex tending through the perfo'rat ion in the'bracket; a nut in s'crewthreaded engagement with the said stem above and below the bracket respec-s tively whereby to adj ustablyy secure the reserve .the same; a pipe extending laterally iromthe side oi the main reservoir between the top there-' 01- and the top or the said reserve tank and having connection with theglatter through its top; and a take-oil. tube in connection with said P e a mm c. sncx. 

